Date: Sun, 5 Dec 1999 11:57:58 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Gareth Williams <ghw2002tii AT hotmail DOT com>
cc: prashant_news AT yahoo DOT com, djgpp AT delorie DOT com
Subject: Re: Setting a variable's selector? - Clarification - I hope.
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On Thu, 2 Dec 1999, Gareth Williams wrote:

> All Plug and Play BIOS Services which are accessible at runtime support a 
> bi-modal interface.  The two modes supported are 16-bit REal Mode and 16-bit 
> Protected MOde.

This probably means that you should use the real-mode interface, since
mixing 16-bit code with 32-bit code in the DPMI environment is tricky,
if not impossible.

So I think you need to forget about 16-bit PM selectors, and instead
work via the real-mode interface, using the transfer buffer,
__dpmi_int, and the other functions that allow to invoke real-mode
procedures.  If you have problems with doing that, please post
specific questions.